Pohang University of Science and Technology · Engineering
이 교수의 연구실은 고강도 및 우수한 연성 동시 확보를 목표로 한 신소재 개발에 초점을 맞추고 있습니다. 특히 다핵소성소재(Medium- and High-Entropy Alloys)와 Fe-Mn-Al-C 기반 초고강도 스틸에서 높은 띠스트레스와 연성을 동시에 확보하기 위한 미세구조 제어 기법을 연구하고 있습니다. 라티스 비정상성, 비재결정 영역 활용 및 TRIP 메커니즘을 통해 기계적 성능을 극대화하는 데 주력하고 있습니다.
Figures are computed from collected data and may differ slightly.
Severe lattice distortion is a core effect in the design of multiprincipal element alloys with the aim to enhance yield strength, a key indicator in structural engineering. Yet, the yield strength values of medium- and high-entropy alloys investigated so far do not substantially exceed those of conventional alloys owing to the insufficient utilization of lattice distortion. Here it is shown that a simple VCoNi equiatomic medium-entropy alloy exhibits a near 1 GPa yield strength and good ductilit
Needs for steel designs of ultra-high strength and excellent ductility have been an important issue in worldwide automotive industries to achieve energy conservation, improvement of safety, and crashworthiness qualities. Because of various drawbacks in existing 1.5-GPa-grade steels, new development of formable cold-rolled ultra-high-strength steels is essentially needed. Here we show a plausible method to achieve ultra-high strengths of 1.0~1.5 GPa together with excellent ductility above 50% by
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